Well with my desktop in my sig, I got 31 seconds in Ubuntu.
Plus, I'm not believing the thing about the RAM helping speed. At least, it never did for me. When in Windows, I could shut down every program and even Windows Explorer and would get the same SuperPI times. I even did it in safe mode once and got the same times.
CPU: Intel i7 2600k @ 4.4 GHz
Cooler: Cooler Master V8
Mobo: ASRock Z68 Extreme3 Gen3
RAM: Corsair Vengeance 16 GB DDR3 1600 MHz
GPU: EVGA 560 Ti
HDD: Cruicial M4 SSD 128 GB
HDD 2: WD VelociRaptor 300 GB
PSU: Corsair TX650w
Case: Corsair 600T Graphite Series